v5.0

• migrated from Clover to OpenCore 0.6.2
• tested for 10.15.3
• upgraded and tested for 10.15.17
• updated guide
• upgrade to VirtualSMC-1.1.7
• upgrade to Lilu-1.4.8
• upgrade to AppleALC-1.5.3
• upgrade to IntelMausi-1.0.4
• upgrade to RTCMemoryFixup-1.0.7